diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 0f9775178c24f6092bd5edbcac56c032a10fec1a..ffdc8332b76e0dfb7a57b7b0c95cf823b996c478 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1248,7 +1248,7 @@ static int evergreen_cp_start(struct radeon_device *rdev)
 	cp_me = 0xff;
 	WREG32(CP_ME_CNTL, cp_me);
 
-	r = radeon_ring_lock(rdev, evergreen_default_size + 15);
+	r = radeon_ring_lock(rdev, evergreen_default_size + 19);
 	if (r) {
 		DRM_ERROR("radeon: cp failed to lock ring (%d).\n", r);
 		return r;
@@ -1281,6 +1281,11 @@ static int evergreen_cp_start(struct radeon_device *rdev)
 	radeon_ring_write(rdev, 0xffffffff);
 	radeon_ring_write(rdev, 0xffffffff);
 
+	radeon_ring_write(rdev, 0xc0026900);
+	radeon_ring_write(rdev, 0x00000316);
+	radeon_ring_write(rdev, 0x0000000e); /* VGT_VERTEX_REUSE_BLOCK_CNTL */
+	radeon_ring_write(rdev, 0x00000010); /*  */
+
 	radeon_ring_unlock_commit(rdev);
 
 	return 0;